Bluetooth Version:4.1+EDR
Support Protocol:A2DP, AVRCP, HFP, HSP
Impendance:32 ohm ± 15%
Sensitivity:108 dB
Frequency Response:20Hz-20KHz
Rated Power: 2.5WM
Max Power: 5WM
Battery capacity: 55 mAh
Working time: 3-4 hours
Standby time: 150 hours
Charging time about 2 hours
